public class J01 {
    //psvm
    public static void main(String[] args) {
        System.out.println(100);
        System.out.println("abc");
        //注释，
        //System.out.println(aaa);
        /*
        多行
         */

        //常量，字面量，字符本身可以解释自己
        //int 100  String "abc"   double 3.14
        System.out.println("=========");
        int a = 60;
        System.out.println(a);
        System.out.println(a);

        a = 12;
        System.out.println(a);

        byte b = 56;

//        int a = "abc";
    }
}
